Heater



Nov. 28, 1 933. H, BATES 1,936,615

HEATER Filed May 30, 1930 Patented Nov. 28, 1933 UITE TATES P TENT OFFIE 1,936,615- HEATER Albert H. Bates, Rockford, 11., assignor to Burd High Compression Ring Company, Rockford,- Ill., a corporation of Illinois Application May 30, 1930. Serial No. 457,554; I

1 Claim. (Cl. 9$'2) This invention relates to heaters for motor Fig. 2 is afront view of the heater, and

vehicles and has more particular reference to one F 3 a d 4 are Vertical eross-seetiens taken utilizing the fluid of the engine cooling system onthe lines 3--3 and 44 of Fig. 2. I

as the heating medium, The same reference numerals are applied t 5 The principal object of my invention is to Corresponding parts throughout the V eW provide a heater of the type mentioned especial- The heater herein disclosed, as Stated ab 1y designed and adapted for rear seat installaiS especially p ineteillatieh iii h e tion, and having provision for a forced draft Ileau Of an automobile 01 other motor vehicle therethrough nade in such a, way as not to in- OH the fiOOl' directly behind the front seat 01 in i0 terfe're with the compactness of the heater and front of th rear but of the heater so as to permit installation of the heater behind is not limited to Sileh inasmuch as it may the front seat or in front of the rear seat, as e found Su tabl o Various e pu p sdes'ired. Heaters having provision for forced p heaters Of th s kiIid would be Suitdraft have been almost entirely limited to use able for use in motor busses where one could'be as front seat heaters, that is, to be installed under installed behind 01 i o t of a seatiall 0. the cowl, owing to the inability to make a heater hem connected in parallel so as to lac-Supplied, of this description compact enough to be suitwith the Circulating h ing d um fIOm t able for rear seat installatign same source. Pipes 10 and 11 leading t0 and In accordance with my invention, the heater m the hea a extended w y, in

is made up simply of a radiator disposed i certain installations to a point under the seat 5' casing of generally triangular form in vertical behind Which the heater is installed hefere being cross-section so as to fit neatly behind the front Xte d d d wn through the 50 as 'ave d seat or in front of the rear seat, and a centrifugal OSS' members of the frame. In other installablower fan is provided beneath the'floor, having time; however, these p p y be d directly the discharge side thereof communicating with iiOWh t ou t e T1 as SheWh n Figure 0 the heater casing, and having the intake side The upp p p 10 a co n t o p ab y thereof communicating with a cold air register through a t p eoek With p p pp into t provided on the floor, preferably, but not neceswater jacket of the motor at a point where the fly, i front of th front t Thu th water attains the highest temperature and where heater is reduced in size practically to the dii also gets h m i y up n r in of mensions of the radiator itself, the fan required the meter, y, in e ead, and the return in connection with it being provided in a sepap p 1 has Connection. With a hose pp ihte rate unit out of the way under the floor. It the, lower outlet hose connection of the radiator would obviously be impossible to arrive at greater I" the Ca between the latter and its Water P p- 35 compactness. But aside from the question of om s mileh d p n it will be evident 90 compactness, the arrangement of the heater in that hot Water or whatever engin Co fluid is the rear passenger compartment and the cold air used, and Wh Constitutes the heating dium register in the front'passenger compartment profor the at S S pp through the pip 10 motes good circulation of air and better heat to e radiate! 13 0f the heater 12 for Passage 40 distribution. Furthermore, making the casing th r th u h an return through t p p 11 t 95 approximately triangular shaped in vertical t engine eee ng system. In Warm weather cross-section with the radiator disposed therein the eater may be entirely shut off by simply in the open front thereof, inclined from a verti- Closing the Geek in the p y line. In anordical, is of advantage not only from the standary fOUI Or fi Passenger h heater 12 point of easier installation, but because it per- 8 u ua y installed behind the front Seat, as 100 mits the front of the heater to be used as a ShOWn in hut in the Case Of Seven p foot rest, the front having a suitable grating Sen ea s, Wher o ding Seats are provided for that purpose, as well as arranging for the behind the front seat, maki g it unhandy or discharge of heated air upwardly for better cireven impossible to install the heater behind the culation and more uniform heat distribution. front seat, the same is arranged to be installed 10 The invention is illustrated in the accompanydirectly in front of the rear seat. A heater of ing drawing, wherein this sort installed behind the front seat or in Figure 1 is a diagrammatic view showing a front of the rear seat, as the case may be, may heater and its fan installed in an automobile in constitute the sole heating means for the car, accordance with my invention; or the same may be provided in conjunction with a front seat heater also having heating fluid circulated through a radiator therein, in which latter event, the supply and return pipes 10 and 11 may be branched off from the same connections with the corresponding pipes for the other heater.

The radiator 13 may, of course, be of any suitable or preferred type. The one herein illustrated has what is known as a turbo-tube core consisting of two or more banks of horizontally extending parallel flat tubes 14 connected at their opposite ends with headers 15, and havingtransverse radiating fins 16 provided in connection with the tubes to furnish the desired amount of radiation surface. The headers are substantially triangular shaped in vertical crosssection, as shown in Fig. 3, and have the tubes of the core disposed in a plane inclined at an acute angle from the vertical, as clearly appears in Figs. 3 and 4, and forming, as it were, one side of the triangle, and the front of the heater. Blocks 17 and 18 are welded, soldered, or otherwise suitably secured in place within each of the headers 15, the block 1'? at thelower end of the back .Wall, and the block 18 at the front end of bottom wall, and tapped holes 19 and 20 are provided in saidblocks for the connection of the pipe 10 with one header and the pipe 11 with the other, either from behind or beneath the headers. That, when the pipes are connected with the headers in the holes 19, the holes 20 are plugged, and vice versa. As explained above, in some installations it is necessary to extend the pipes along the fioor from the back of the heater before extending them down through the floor, in order to avoid cross members of the frame;

' in such cases the holes 19 are used. Otherwise,

the holes 20 may be used.

A sheet metal shell or casing 2115 provided, extending the full length of the heater from header to header, as indicated in Fig. 2, and, as shown in Figs. 3 and 4, is conformed approximately to the triangularcross-section of the headers to fit across the bottom and back thereof, as indi-' cated at 22 and 23, respectively, and partly up the front, as at 24, and partly across the top, as at 25. Longitudinal flanges 26 and 27 are provided on the front and top portions of the casing extending substantially parallel 'to one another. End pieces 28 for the casing are provided, as indicated in Fig. 2, and flanged to fit over the ends of the casing and be held in place by a front cover plate 29, the rim of which is flanged, as appears at 30, to fit over the flanges 26and 2'7 of the casing 21, as well as over the end pieces 28 so as to complete the casing assembly and completely enclose the radiator therein. Screws 31, passed through holes in the ends of the cover 29, thread in nuts 32 provided on the fronts of the headers 15 to keep the parts in assembled relation. A hole 33 is also provided at 'one end of the cover close to the top thereof through which access may be had to a plug removably threaded in a hole in the front wall of the one header near the top thereof. The removal of this plug permits the escape of air from the radiator when the system is being filled, and,

of course, the plug is inserted as soon as all of the air has escaped. Openings 35 are. provided in the cover 29 entirely across the front of thev core 13 of the radiator, so that the cover consti- The air to be heated is sup.

a hole 37 provided in the bottom 22 of the easing 21. Several of these holes may be provided in the bottom of the casing, and whichever one is most conveniently situated, considering the location of brake rods and the like in a given installation, can be used and a hole out through the floor to register therewith and permit the extension therethrough of the tube for connection with the fan.

A centrifugal fan is shown at 38 suitably suspended from beneath the floor at a point between the heater and a cold air register 39 provided on the fioor, preferably, but not necessarily, at a point in front of the front seat. The fan 38 may be of the type disclosed in my application, Serial No. 456,960 filed May 29, 1930, having an electric motor suitably supported on the easing of the fan, as indicated by the dotted circle in Figure 1, and driving a squirrel-cage type impeller within the casing. As disclosed in said application, the casing of the fan has the intake through the side of the casing substantially centrally of theimpeller; a tube 40 is shown having communication with the cold air register 39for delivery of cold air to the fan at the point mentioned. The air is discharged from the casing of the fan substantially tangentially with reference to the impeller, as at 41, and a tube 42 conducts the air to the heater by way of the tube 36, to which the tube 42 is suitably attached.

The provision of the fan as a separate unit for creating the forced draft through the heater and the mounting thereof out of the way under the floor is, of course, the feature mainly responsible for the compactness arrived at in the construction of the heater; the heater is reduced in size practically to the dimensions of the radiator employed. But aside from the advantage of compactness, it is noteworthy that circulation of air in the tonneau is promoted by placing the cold air register 39 in the front passenger compartment and the heater in the rear passenger compartment, with the fan therebetween to draw in cold air through the register 39 for discharge through the heater, and, of course, the improved circulation means more uniform heat distribution, which is something not very easily obtained, particularly with certain types of heaters. The disposition of the radiator inclined from the vertical is also of advantage from the standpoint of promoting good circulation and heat distribution, because the heated air is directed upwardly as. one part of a natural circuit, as indicated by thearrows in Figure 1. Where the heater is installed behind the front seat, as shown in full lines in Figure 1, the rear seat passengers are given the full benefit of the heat by reason of the fact that the air is thrown rearwardly and upwardly, as indicated. It is also apparent that when the heater is mounted in that location in a five passenger car the cover thereof is close enough to the rear seat to serve as a foot rest, and the inclination thereof is just right for good comfort. 1

It is believed the foregoing description conveys a clear understanding of all of the objects and advantages, of my invention. Certain changes might be made without seriously departing from the spirit and scope of the invention, and for that reason, the appended claim has been drawn with a view to covering all legitimate modifications and. adaptations.

I claim:

A heater for heating the interior of an automobile or the like comprising an air circulating system having an inlet end connected with the interior of the car in front of the front seat and having an air discharge connected with the interior of the car behind the front seat, a heat radiator disposed inside the car behind the front seat over the air discharge whereby to distribute heat by forced circulation from the radiator inside the car behind the front seat, and a centrifugal fan on the outside of the car in said air circulating system between the inlet and dis- 

